Blood test feedback, please?

[BadHare]

Hi Folks,

Just had blood test results back, following a repeat of feeling weak & wobbly, as happened last September/October.

I changed my sublingual B12 brand, & dropped the dose due to dietary increase, & thought it might be PA, but results for B12 came back high in range despite no supplements for 3 weeks, though I'm aware it takes 3 months for B supplements to deplete. Just been called in to doctors due to "unusual" THs, as my GP who knows I self medicate is away. He requested the B12 blood sample go to St, Thomas' for more accurate test, but don't think this was done. I wasn't given the print out for vitamin D which is low when I spoke to the receptionist, as I'd also stopped taking any additional to my prescription 800ius, now topping up with a week of 10000ius before going back to 4000. Wondering if she missed out anything else I ought to know, aside from iron & ferritin as i was only given page 1 of 5. >

I'm currently on warm weather T3 dose of 62.5mcg of T3, as free T3 was low, last test on 50mcg: 4.1 pmol/L (3.1-6.8pmol/L). Winter dose of approx equivalent of 75mcg T3, including NDT is definitely too high, & feel more exhausted on 50mcg, Fatigue's worsened over the past month as back to needing an afternoon sleep, but I don't feel as shakey.

Thanks in advance for your helpful advice!

Range in brackets:

Serum TSH <0.05 (0.30-5.0)

Serum free T4 <1.0 (11-22)

Serum free T3 18 (3.1-6.8) Queried whether I was taking T3

No action on the following:

Plasma fasting Glucose 4.9 (3.6-5.5)

Serum vitamin B12 793 (181-910)

Urea & electrolytes:

Serum sodium 137 (133-146)

Serum Potassium 4.2 (3.5-5.3)

Serum urea level 4.6 (2.8-7.8)

Serum inorganic phosphate 0.79 (0.8-1.5) abnormal - no action?

Serum folate 15.3 (>5.4)

eGFR Abnormlal - no action?

Serum creatinine 42 (53-97)

eGFRcreat (CKD/EPI?/1.73m"2 (60ml/min.173m*2)

Calc + Alb

Serum calcium 2.27

Serum adjusted calcium conc 2.27 (2.2-2.6)

Serum albumin 41 (35-50)

Vitamin D 88 (78-150)

Results from 8 months ago:

Serum free T4 make appoitment <3. pmol/L (11-22pmol/L)

Serum free T3 normal 4.1 pmol/L (3.1-6.8pmol/L)

Serum Magnesium normal 0.79 mmol/L (0.7-1.0mmol/L) increase my supplement?

Serum gamma GT normal 18 u/L (0.00-39.00u/L) No idea what this is???

Serum vitamin B12 normal 335ng/L (181.00-910.00ng/L) Thought this would be higher in range due to diet & recently supplementing with nutritional yeast.

Serum folate normal 5.6 ug/L (>5.4ug/L)

Serum Ferritin normal 74ug/L (10.0-291.0ug/L)

eGFRcreat 1.73m*2 >90 mL/min/1.73M*2 (>60.0mL/min/1.73m*2)

[Clutter]

BadHare,

If you only got page 1 of 5 of your results you need to go back to the receptionist and request the missing 4 pages.

TSH is suppressed as expected on 62.5mcg T3 and FT4 is low because you are taking T3 only.

If you left 12+ hours between last dose and blood draw you are very over medicated to have FT3 18. FT3 should remain <6.8.

If you took your T3 dose before your blood test then that will account for the high reading.

B12 is high as expected because you have been supplementing. If you want a baseline B12 result you need to stop supplementing for 4 months prior to the blood draw as it takes this long for red blood cells to die off and renew.

VitD 88 is in replete range 75 -200 but you will need to supplement 2,000 - 2,500iu daily Oct-Apr to maintain level.

Ferritin was adequate at 74.

Low creatinine means you have efficient kidneys google.co.uk/search?q=serum...

[BadHare in reply to Clutter]

Thanks Clutter!

I telephoned, but got no no further information from the receptionist, aside from vitamin D. I'll see my usual GP after his holiday.

I took T3 that morning, as the blood draw was at lunchtime. I'd really only wanted my B12 checking, but my GP decided on the other tests. I stopped taking my usual dose of D3 to see what the results would be on my prescribed dose. I'm topping up again, as previous results hadn't been optimal on 2,000 a day in autumn.

[Clutter in reply to BadHare]

BadHare,

T3 can peak in the blood for up to 6 hours which is why your FT3 is so high.

Your vitD is fine now but you will need to supplement during the autumn and winter.

[BadHare in reply to Clutter]

Thanks again, Clutter!

I'll save my high dose D3s for a few months. Winter is coming...